留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

超低浓度甲烷在Cu/γ-Al2O3催化颗粒流化床中的燃烧特性

张力,  张俊广,  杨仲卿,  唐强

downloadPDF
文章导航 > 燃料化学学报（中英文）  > 2012 >  40(07): 886-891
张力, 张俊广, 杨仲卿, 唐强. 超低浓度甲烷在Cu/γ-Al2O3催化颗粒流化床中的燃烧特性[J]. 燃料化学学报（中英文）, 2012, 40(07): 886-891.
引用本文: 张力, 张俊广, 杨仲卿, 唐强. 超低浓度甲烷在Cu/γ-Al2O3催化颗粒流化床中的燃烧特性[J]. 燃料化学学报（中英文）, 2012, 40(07): 886-891.
shu
ZHANG Li, ZHANG Jun-guang, YANG Zhong-qing, TANG Qiang. Combustion characteristics of ultra-low content methane in a fluidized bed reactor with Cu/γ-Al2O3 as catalytic particles[J]. Journal of Fuel Chemistry and Technology, 2012, 40(07): 886-891.
Citation: ZHANG Li, ZHANG Jun-guang, YANG Zhong-qing, TANG Qiang. Combustion characteristics of ultra-low content methane in a fluidized bed reactor with Cu/γ-Al2O3 as catalytic particles[J]. Journal of Fuel Chemistry and Technology, 2012, 40(07): 886-891.
shu

超低浓度甲烷在Cu/γ-Al2O3催化颗粒流化床中的燃烧特性

  • 1.

    重庆大学 低品位能源利用技术及系统教育部重点实验室, 重庆 400030;

  • 2.

    重庆大学 动力工程学院, 重庆 400030

基金项目: 重庆市自然科学基金(2009BA6067);中央高校基本科研业务费(CDJZR12140031)。
详细信息
    通讯作者:

    张力(1956-), 男, 教授, 主要研究方向为洁净燃烧、低品位燃料能源化技术, E-mail:lizhang_cqu@163.com,Tel:023-65103114.

  • 中图分类号: TQ517.2

Combustion characteristics of ultra-low content methane in a fluidized bed reactor with Cu/γ-Al2O3 as catalytic particles

  • 1.

    Key Laboratory of Low-grade Energy Utilization Technologies and Systems Chongqing University, Chongqing 400030, China;

  • 2.

    College of Power Engineering, Chongqing University, Chongqing 400030, China

    摘要
  • 摘要: 采用流化床燃烧技术,使用自制Cu/γ-Al2O3颗粒作为催化剂床料,实验研究了超低浓度甲烷在流化床中催化燃烧时床层温度(450~700℃)、流化风速比ω(1.5~4)、进气甲烷体积分数(0.3%~2%)等对甲烷燃烧效率的影响。结果表明,床层温度是影响甲烷催化燃烧反应的关键因素,甲烷的转化率随着床层温度的升高而增加;床层温度达到650℃时,甲烷含量低于1%的超低浓度甲烷其转化率超过95%,继续提高床层温度至700℃且控制流化风速比ω≤2可以实现甲烷的完全转化;甲烷转化率随着流化风速和进气甲烷浓度的增加而降低,当ω>3.5时,温度对甲烷转化的影响减弱,未燃烧的甲烷含量增大。动力学实验发现,床层温度较低时,催化反应受动力学控制,测得催化反应的活化能Ea为1.26×105J/mol,反应级数m为0.73,当温度t>450℃时,扩散作用影响显著,反应级数增大。
    Abstract: Catalytic combustion of ultra-low content methane was carried out in a fluidized bed reactor with Cu/γ-Al2O3 catalysts as particle bed material; the effects of bed temperature (450~700℃), fluidizing velocity ratio (ω, 1.5~4), and inlet methane concentration (0.3%~2%) on the combustion characteristics were investigated. The results show that the bed temperature is a major influencing factor for the catalytic combustion; methane conversion increases with the bed temperature. When the bed temperature reaches 650℃, methane conversion exceeds 95% with the methane concentration lower than 1%; methane can be almost completely converted when the bed temperature reaches 700℃ and the fluidizing velocity ratio ω is not higher than 2. Methane conversion decreases with the increase of the fluidizing velocity and inlet methane concentration; when ω exceeds 3.5, the influence of temperature on methane conversion becomes less significant with an increase of the unburned methane content. Under a low temperature, the combustion is controlled by the catalytic reaction rate; activation energy Ea and reaction order m estimated by regression are 1.26×105 J/mol and 0.73, respectively. When the bed temperature exceeds 450℃, mass transport limitations turns to an important factor influencing the methane conversion.
    • HTML全文
    • 参考文献(19)
  • WARMUZINSKI K. Harnessing methane emissions from coal mining[J]. Process Saf Environ Prot, 2008, 86(5): 315-320.
    SU S,CHEN H. Characteristics of coal mine ventilation air flows[J]. J Environ Manage, 2008, 86(1): 44-62.
    YANG Z, GRACE J R, LIM C J, ZHANG L. Combustion of low-concentration coal bed methane in a fluidized bed reactor[J]. Energy Fuels, 2011, 25(3): 975-980.
    SRIVASTAVA M. Systematic quantification of ventilation air methane and its evaluation as an energy source[J]. Mining Eng, 2006, 58(11): 52-56.
    王一坤, 刘银河, 车得福. 通风瓦斯处理系统燃烧特性研究[J]. 工程热物理学报, 2011, 32(1): 169-172. (WANG Yi-kun,LIU Yin-he,CHE De-fu. Study on characteristics of ventilation air methane processing system[J]. Journal of Engineering Thermophysics, 2011, 32(1): 169-172.)
    FOKA M,CHAOUKI J,GUY C,KLVANA D. Natural gas combustion in a catalytic turbulent fluidized bed[J]. Chem Eng Sci,1994,49(24A): 4269-4276.
    BARON J, BULEWICZ E M, ZUKOWSKI W. Combustion of hydrocarbon fuels in a bubbling fluidized bed[J]. Combust Flame, 2002, 128(4): 410-421.
    刘安源, 刘石. 流化床内颗粒碰撞传热的理论研究[J]. 中国电机工程学报, 2003, 23(3): 161-165. (LIU An-yuan,LIU Shi. Theoretical study on impact heat transfer between particles in fluidized bed[J]. Proceedings of the CSEE,2003,23(3): 161-165.)
    OKASHA F. Staged combustion of rice straw in a fluidized bed[J]. Exp Thermal Fluid Sci, 2007, 32(1): 52-59.
    SOTUDEH-GHAREBAGH R,CHAOUKI J,SAURIOL P. An experimental study of non-premixed combustion in a turbulent fluidized-bed reactor[J]. Fuel Process Technol, 2007, 88(9): 847-858.
    SRACCPECCHIA S,CIVERA A,SAO G,SPECCHIA V. Palladium/perovskite/zirconia catalytic premixed fiber burners for efficient and clean natural gas combustion[J]. Catal Today, 2006, 117(4): 427-432.
    HAYHURST A N, JOHN J J, WAZACZ R J. The combustion of propane and air as catalyzed by platinum in a fluidized bed of hot sand [J]. Symp (Int) Combust, 1998, 27(2): 3111-3118.
    IAMARINO M, CHIRONE R, LISI L, PIRONE R, SALATINO P. Catalytic combustion of methane in a fluidized bed reactor under fuel-lean conditions [J]. Combust Sci Technol, 2002, 174(11/12): 361-375.
    IAMARINO M,AMMENDOLA P,CHIRONE R, PIRONE R, RUOPPOLO G, RUSSO G. Nonpremixed catalytic combustion of methane in a fluidized bed reactor[J]. Ind Eng Chem Res, 2006, 45(3): 1009-1013.
    郝志刚, 朱庆山, 雷泽, 李洪钟. 流化床反应器中不同Ni/Al2O3催化剂上CH4-CO2重整反应性能的比较研究[J]. 燃料化学学报, 2007, 35(4): 436-441. (HAO Zhi-gang,ZHU Qing-shan,LEI Ze,LI Hong-zhong. Comparative study of CH4-CO2 reforming over different Ni/Al2O3 catalysts in a fluidized bed reactor[J]. Journal of Fuel Chemistry and Technology, 2007, 35(4): 436-441.)
    孙志翱, 金保升, 章名耀, 刘仁平, 张勇. 棉秆在流化床中的燃烧特性[J]. 燃烧科学与技术, 2008, 14(2): 147-151. (SUN Zhi-ao, JIN Bao-sheng, ZHANG Ming-yao, LIU Ren-ping, ZHANG Yong. Combustion characteristics of cotton stalk in a fluidized bed[J]. Journal of Combustion Science and Technology, 2008, 14(2): 147-151.)
    MOALLEMI F,BATLEY G. Chemical modeling and measurements of the catalytic combustion of CH4/air mixtures on platinum and palladium catalysts[J]. Catal Today, 1999, 47(1/4): 235-244.
    贺苗, 陈久岭, 李永丹. 处理方法对活性炭在流化床反应器内甲烷催化裂解制氢活性的影响[J]. 燃料化学学报, 2007, 35(3): 308-312. (HE Miao, CHEN Jiu-ling, LI Yong-dan. Effect of treatment methods on catalytic activity of activated carbon in decomposition of methane to COx-free hydrogen in a fluidized-bed reactor[J]. Journal of Fuel Chemistry and Technology, 2007, 35(3): 308-312.)
    DUPONT V, ZHANG S-H, BENTLEY R, WILLIAMS A. Experimental and modeling studies of the catalytic combustion of methane[J]. Fuel, 2002, 81(6): 799-810.
    • 相关文章
    • 施引文献
  • 资源附件(0)
  • 加载中
WeChat 点击查看大图
计量
  • 文章访问数:  2156
  • HTML全文浏览量:  14
  • PDF下载量:  882
  • 被引次数: 0
出版历程
  • 收稿日期:  2011-10-19
  • 修回日期:  2011-12-28
  • 刊出日期:  2012-07-31

目录

    /

    返回文章
    返回
    友情链接： 新型炭材料 中国科学院 中国知网 万方论文查重系统

    主办单位：中国科学院山西煤炭化学研究所 中国化学会主编：房倚天

    电子邮件：rlhx@sxicc.ac.cn

    版权所有 © 《燃料化学学报（中英文）》编辑部 本系统由 北京仁和汇智信息技术有限公司 开发    百度统计

    x 关闭 永久关闭

    2023年《燃料化学学报（中英文）》评优结果公布！